Chair: Dr. Rosa Valiante

Main goal is the development of a Source Catalog of coalescing massive black holes built on top of the semi-analytical merger-tree code GAMETE/QSOdust (among the most advanced codes present in current literature) which tracks the history of star-formation+stellar-feedback, and black hole-formation+AGN-feedback, during the process of clustering of dark matter halos. Codes will be developed to simulate populations of heavy stellar black hole binaries detectable with LISA and commits to deliver a Catalog of inspiralling stellar black hole binaries. This WG jointly with the Consortium commits to deliver a mock Catalog of waveforms to be injected in pipelines to simulate the LISA sky. This WG will also discuss potential synergies with Einstein Telescope, the third generation ground-based interferometer.